Cast
	The Doctor	William Hartnell
	Susan Foreman	Carole Ann Ford
	Ian Chesterton	William Russell
	Barbara Wright	Jacqueline Hill
	Crew
	Written by	David Whitaker
	Make-up	Ann Ferreggi
	Costumes	Daphne Dare
	Designer	Raymond P. Cusick
	Script Editor	David Whitaker
	Associate Producer	Mervyn Pinfield
	Producer	Verity Lambert
	Director	Richard Martin (episode 1)
		Frank Cox (episode 2)

Transmission Details
Episode	Episode Name	Original UK Transmission Date	Duration
1	The Edge of Destruction	8 February 1964	25:04
2	The Brink of Disaster	15 February 1964	22:11